21232302232212 has 240 divisors, whose sum is σ = 60405102793728. Its totient is φ = 6476117806080.

The previous prime is 21232302232189. The next prime is 21232302232241. The reversal of 21232302232212 is 21223220323212.

21232302232212 is a `hidden beast` number, since 2 + 1 + 2 + 32 + 302 + 2 + 322 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 270398037 + ... + 270476547.

Almost surely, 2^{21232302232212} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21232302232212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30202551396864).

21232302232212 is an abundant number, since it is smaller than the sum of its proper divisors (39172800561516).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21232302232212 is a wasteful number, since it uses less digits than its factorization.

21232302232212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79908 (or 79897 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 21232302232212 its reverse (21223220323212), we get a palindrome (42455522555424).

The spelling of 21232302232212 in words is "twenty-one trillion, two hundred thirty-two billion, three hundred two million, two hundred thirty-two thousand, two hundred twelve".